在字符串前后摆脱标点符号的正则表达式

Question

有没有办法摆脱字符串前端和后端的符号？

例如，

"hello," -> "hello"
"hello;" -> "hello"

换句话说，删除单词之后，之前或之内的所有标点符号，除了单引号和单个短划线，如果它们后跟更多字母。

更多例子，

"lies,", "'This", "all-eating" and "deserv'd."

将成为

"lies", "this", "all-eating" and "deserv'd"

Answer 1

使用posix正则表达式术语\p{Punct}：

str = str.replaceAll("^\\p{Punct}*|\\p{Punct}+$|\\p{Punct}{2,}", "")

使用＆＃34;两个或更多＆＃34>删除中间字符标点符号。匹配。

---

一些测试代码：

for (String str : new String[]{"hello,", "hello;", "li--es", "'This", "all-eating", "deserv'd."})
    System.out.println(str.replaceAll("^\\p{Punct}*|\\p{Punct}+$|\\p{Punct}{2,}", ""));

输出：

hello
hello
lies
This
all-eating
deserv'd